Tor Browser 10.5 ram usage

hello im using 10.5 version of tor its work well for me other version dosent work for me help me it was work perfectly before 5 days but idk now its using more than 4 gb ram when i open new tab i open 8 tab its keep incresing so help me how can i fix that or is it server issue?

Could be any number of reasons. In order to check memory consumption of specific tabs, you can type about:performance into the address bar and hit Enter.

but how to fix it lower consumption ram its work perfect before 4 days why its keep incresing tor using 4gb ram on 8 tab and its always keep incresing